User Accessed Suspicious URL Categories

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Id	fb0f4a93-d8ad-4b54-9931-85bdb7550f90
Rulename	User Accessed Suspicious URL Categories
Description	Creates an incident in the event the requested URL accessed by the user has been identified as Suspicious, Phishing, or Hacking.
Severity	Medium
Tactics	InitialAccess CommandAndControl
Techniques	T1566 T1071
Required data connectors	SyslogAma
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SymantecProxySG/Analytic Rules/UserAccessedSuspiciousURLCategories.yaml
Version	1.0.5
Arm template	fb0f4a93-d8ad-4b54-9931-85bdb7550f90.json

KQL

SymantecProxySG
| mv-expand cs_categories
| where cs_categories has_any ("Suspicious","phishing", "hacking")
| summarize StartTime = min(TimeGenerated), EndTime = max(TimeGenerated), count() by sc_filter_result, cs_userdn, c_ip, cs_host, Computer,  tostring(cs_categories)

YAML

triggerThreshold: 0
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: cs_userdn
    identifier: FullName
- entityType: Host
  fieldMappings:
  - columnName: Computer
    identifier: FullName
- entityType: IP
  fieldMappings:
  - columnName: c_ip
    identifier: Address
kind: Scheduled
requiredDataConnectors:
- datatypes:
  - Syslog
  connectorId: SyslogAma
queryPeriod: 1h
id: fb0f4a93-d8ad-4b54-9931-85bdb7550f90
relevantTechniques:
- T1566
- T1071
triggerOperator: gt
name: User Accessed Suspicious URL Categories
description: |
    'Creates an incident in the event the requested URL accessed by the user has been identified as Suspicious, Phishing, or Hacking.'
status: Available
query: |
  SymantecProxySG
  | mv-expand cs_categories
  | where cs_categories has_any ("Suspicious","phishing", "hacking")
  | summarize StartTime = min(TimeGenerated), EndTime = max(TimeGenerated), count() by sc_filter_result, cs_userdn, c_ip, cs_host, Computer,  tostring(cs_categories)  
version: 1.0.5
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SymantecProxySG/Analytic Rules/UserAccessedSuspiciousURLCategories.yaml
severity: Medium
queryFrequency: 1h
tactics:
- InitialAccess
- CommandAndControl

ARM

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/fb0f4a93-d8ad-4b54-9931-85bdb7550f90')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/fb0f4a93-d8ad-4b54-9931-85bdb7550f90')]",
      "properties": {
        "alertRuleTemplateName": "fb0f4a93-d8ad-4b54-9931-85bdb7550f90",
        "customDetails": null,
        "description": "'Creates an incident in the event the requested URL accessed by the user has been identified as Suspicious, Phishing, or Hacking.'\n",
        "displayName": "User Accessed Suspicious URL Categories",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "cs_userdn",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "Computer",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "c_ip",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SymantecProxySG/Analytic Rules/UserAccessedSuspiciousURLCategories.yaml",
        "query": "SymantecProxySG\n| mv-expand cs_categories\n| where cs_categories has_any (\"Suspicious\",\"phishing\", \"hacking\")\n| summarize StartTime = min(TimeGenerated), EndTime = max(TimeGenerated), count() by sc_filter_result, cs_userdn, c_ip, cs_host, Computer,  tostring(cs_categories)\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl",
          "InitialAccess"
        ],
        "techniques": [
          "T1071",
          "T1566"
        ],
        "templateVersion": "1.0.5",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}